Cardi’s collabing with Fashion Nova on her own collection, and CEO Richard Saghiantells us they’re planning a HUGE launch party for its release … featuring a live set from the “I Like It” rapper herself.

We’re told other big artists are slated to perform as well … and the event’s scheduled for early November.

There’s more — Saghian says it’s not a done deal, but he anticipates Cardi will be dropping a brand new single at the party … which they’ll stream live on FN’s website.